OnSecurity

OnSecurity is a penetration testing company for UK businesses. Instead of the usual scoping and paperwork, clients add their targets in an online portal and pick a start date.

Testers report findings as they find them, so problems can be fixed during the engagement rather than after a final document arrives. The company pairs automated tooling with human testers.

What OnSecurity offers

• Web application testing — manual and AI-assisted checks of websites and apps.
• Network and cloud testing — assessment of infrastructure and hosted environments.
• Mobile testing — security review of mobile applications.
• Phishing simulation — exercises that test how staff respond to fake emails.
• Continuous scanning — always-on monitoring that raises alerts about new exposures between tests.

Who it works with

The company serves UK organisations and says it has hundreds of clients. Its site addresses security leaders such as CISOs and CTOs.

Key facts

• Accreditation: CREST approved
• Platform: a single portal for booking, results and past reports
• Founders: described as having long experience in ethical hacking
• Reviews: a high rating on the G2 review site